Trellis1. An object-oriented language from the University of Karlsruhe(?) with static type-checking and encapsulation. 2. An object-oriented application development system from DEC, based on the Trellis language. (Formerly named Owl). E-mail: Jerry Smith <[email protected]> ["Persistent and Shared Objects in trellis/owl", P. O'Brien et al, Proc 1986 IEEE Workshop on Object-Oriented Database Systems, IEEE, NY 1986].